squares = []
for x in range(10):
    squares.append(x**2)

squares = [x**2 for x in range(10)]
print(squares)

even = [x for x in range(10) if x%2 == 0]
print(even)

text = "Hello World"
uppercase = [char for  char in text if char.isupper()]
print(uppercase)

coordinates = [(x,y) for x in range(3) for y in range(3)]
print(coordinates)